PUBLISHED: 07:44, Tue, Nov 17, 2020 | UPDATED: 07:54, Tue, Nov 17, 2020
David Frost and his counterpart met this week to try and break the current Brexit deadlock ahead of Thursday's deadline. Even if a deal is struck between the two sides, any trade agreement will need to be agreed by both the EU Council and European Parliament - as well, possibly, by dozens of parliaments across the bloc.
However, due to the complexity and broad nature of the potential agreement between the two sides, any deal may also need to be ratified by national parliaments too.
A national parliament could block the deal when it comes to vote but this has so far not happened for any EU agreement.
In 2016, the regional Belgian Federation of Wallonia-Brussels parliament almost sunk the EU's landmark Canada agreement.
However, chaos was averted when approval was granted with just days to spare.
Due to this process, it is unclear if any trade deal will pass the legislative hurdles needed before the end of the transition period on